One of the methods of introducing foreign genes into a plant is to make use of certain
soil bacteria to infect the plant and transfer several of blue genes to the infected plant
cells, _____ in high rate of plant cell pision.
|
A．results |
B．resulting |
C．to result |
D．resulted |
The subjects we have at school _____biology.
|
A．including |
B．include |
C．included |
D．to include |
The electricity ____, the light went out.
|
A．cut off |
B．having cut off |
C．was cut off |
D．had cut off |
I don’t like _____ speaking ill of each other.
|
A．Jack and Henry |
B．Jack’s and Henry’s |
|
C．Jack and Henry’s |
D．Jack’s and Henry |
There is a crowd of people in front of the house over there. What do you suppose
_____ there?
|
A．is happened |
B．has happened |
|
C．happening |
D．to have happened |
_____ him speak English so fluently, and you would think him an American.
|
A．Hearing |
B．Hear |
C．Heard |
D．Having heard |
